Periodic Table
Trends
Electrons
Review
100

Where are the metals on the periodic table?

The left of the staircase

100

Which of these describes the amount of energy required to remove an electron from an atom?

A)Atomic Radius

B)Electronegativity

C)Ionization Energy

D)Reactivity

C) Ionization Energy

100

The label for a chemical was lost. A chemist conducts a flame test to figure out the identity of this compound. The flame test resulted in a purple flame, what compound is it based on the data?

Strontium Chloride - Red

Copper Sulfate - Green

Potassium Nitrate - Purple

Sodium Chloride - Orange

Potassium Nitrate

100

100 points EACH

What equipment would be the best for measuring the mass of a rock in grams?

What would be best for measuring how many milliliters of liquid you have? 

What will be best for measuring how many centimeters long a necklace is?


Electronic Balance

Graduated Cylinder

Ruler

200

Elements in the same ___________ will have the same properties

Group (up and down!)

200

What is the definition of electronegativity?

Ability to attract electrons in a chemical bond

200

BONUS HISTORY (DOUBLE POINTS):

What two observations from the gold foil experiment lead to the development of the NUCLEAR model of the atom?

1) Atom is mostly empty space

2) Atom has a positively charged center (nucleus)

200

What discovery resulted in the plum pudding model being developed?

The discovery of the electron 

(JJ Thompson was able to remove a small negatively charged particle from the atom)

300

Which group is the most stable and why?

Noble gases, they have a full valence shell (8) and are unreactive

300

Which element has the highest ionization energy? 

a) I

b) Br

c) Cl

d) F

d) F has the highest IE
300

What is the CHEMICAL SYMBOL for this electron configuration: 

1s2 2s2 2p6 3s2 3p1

Al

300

Which two atoms/ions are the same element?


Atom A: 5p, 6n, 5e

Atom B: 6p, 6n, 5e

Atom C: 5p, 5n, 6e

Atoms A and C because same protons

protons give an element its identity

400

What group is element 1s2 2s2 2p6 in? 

Noble gases

400

What is the trend for atomic radius across a period and why does it occur?

Atomic radius DECREASES across a period because number of protons increases, so force of attraction pulling the electrons is stronger (pulls them closer so the atom is smaller!)

400

An electron is excited to a higher energy level with 2.09 volts of energy. When it returns to the ground state, how much energy will be released as a photon of light?

2.09 volts

400

How much water is there in the graduated cylinder below?

21.5 mL (or 21.6 mL, 21.4 mL)

500

What is the group name that has elements with the oxidation number of +1?

Alkali Metals

500

What element will have the same properties of Sodium and will also have a larger radius?

Potassium, Rubidium, Cesium, or Francium

500

What's the electron configuration for Arsenic? 

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3

500

Sodium has an average atomic mass of 22.99 amu according to the periodic table.

1) What is the most abundant isotope of sodium?

2) How many neutrons will a sodium atom most likely have?

1) Sodium - 23

2) 12 neutrons

600

Which sample is the metal, metalloid, and nonmetal?

Sample A: dull, brittle, poor conductor

Sample B: lustrous, brittle, can conduct electricity

Sample C: lustrous, malleable, can conduct electricity 

A: Nonmetal

B: Metalloid

C: Metal

600

Draw two arrows showing the directions in which atomic radius INCREASES on the periodic table.

One arrow going down, one arrow pointing to the left

600

All elements in group 7 have ____ (number) valence electrons and are _______________ (metals, nonmetals, or metalloids). The group name is _______________.


7, nonmetals, halogens

600

What is the average atomic mass for an element that has an isotope with a mass of 107 and a percent abundance of 51.86% and 109 with an abundance of 48.14%? What element is this?

107.87 amu, Silver